MP2128 datasheet(3/8 Pages) MPS

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MP2128 – 3MHz, 1A SYNCHRONOUS STEP-DOWN CONVERTER

MP2128 Rev. 0.9

www.MonolithicPower.com

7/20/2009

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

ELECTRICAL CHARACTERISTICS

(5)

VIN = VEN = 3.6V, TA = +25°C, unless otherwise noted.

Parameters

Condition

Min

Typ

Max

Units

Supply Current

VEN = VIN, VFB = 0.65V

350

µA

Shutdown Current

VEN = 0V, VIN = 6V

0.01

µA

IN Under Voltage Lockout Threshold Rising Edge

1.8

2.1

2.3

IN Under Voltage Lockout Hysteresis

250

TA = +25°C

0.582

0.594

0.606

Regulated FB Voltage

–40°C ≤ TA ≤ +85°C

0.576

0.594

0.612

FB Input Bias Current

VFB = 0.65V

-50

PFET Current Limit

Duty=100%

1.5

PFET On-Resistance

ISW = 100mA

200

mΩ

NFET On-Resistance

ISW = –100mA

150

mΩ

SW Leakage Current

VEN = 0V; VIN = 6V

VSW = 0V or 6V

–1

µA

EN High Threshold

–40°C ≤ TA ≤ +85°C

1.6

EN Low Threshold

–40°C ≤ TA ≤ +85°C

0.4

Internal Soft-Start Time

100

µs

Oscillator Frequency

2.4

2.8

3.2

MHz

Thermal Shutdown Threshold

Hysteresis=20°C

150

°C

Note:

5) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.

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